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Bw. NORDBEBG. GUT-OEE FOR STEAM ENGINES.

No. 384,213. PatentedJune 5, 1888,.

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GUT-OEE EDR STEAM ENGINES. No. 884,218.. Patented June 5, 1888.

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UNITED STATE-s PATENT OFFICE.

BRUNO V. NORDBERG, OF MILWAUKEE, WISCONSIN, ASSIGNOR TO THE l BRUNONORDBERG COMPANY, OF SAME PLACE.

'CUT-OFF FOR STEAM-ENGINES.

SPECIFICATION forming part of Letters Patent No. 384,213, dated June 5,1888.

Application tiled December 20, 1887. Serial No. 258,463. (No model.) d

To all whom it may concern:

Be it known that I, BRUNO V. NORDBERG, of Milwaukee, in the county ofMilwaukee, and in theState of Wisconsin, have invented certain new anduseful Improvements in Cut-Offs for Steam-Engines; and I do herebydeclarethat the following is a full, clear, and exact descriptionthereof.

My invention relates to automatic cut-offs for steam-engines, and willbe fully described hereinafter.

In the drawings, Figure l is a vertical central section of my device,taken on aline at right angles to the crankshaft that connects my devicewith the eccentric of the engine. Fig. 2 is a vertical central sectiontaken at right angles to that in Fig. l. Fig. 3 is a section on line oo, Fig. l. Fig. 4 is a section on line of o', Fig. 2. Fig. 5 is a detailin section of the main working parts. Fig. 6 is a detail in elevation.Fig. 7 is a plan or top view, and Fig. 8 is a section on line w w, Fig.6.

A is thestand of my cut-off, and B is a hollow stem of the stand aboutwhich the governor-sleeve C revolves.

D is a trip-head that is suspended through the stem B by a rod, c, andkeeper b. The lower end of the trip-head is beveled, as shown in Figs. 1and 5, and one face of this bevel is designed for engagement with theinclined surface e of a triplevcr, E. This trip-lever E is toggled atits lower end to the arinf of a cranksleeve, F, by a link, g, and thecrank-sleeveF is keyed onto the rockshaft G, which latter has bearings bin' each side of the stand A. The ends of pin b2, that connect the linkg and trip -lever to each other, extend across the jacket H, and aresecured in the sides thereof, so that when the trip -lever reciprocatesthe jacket H and spring-barrel 7L will reciprocate with it.

H is an upright cylinder that is fitted in stand A so as to he capableof vertical recipv rocation therein, and the pin b2, that connects thelink g with trip -lever Efpasses through openings in the sides of thiscylinder and into the sides of the loose jacket H. f

The stand A has a slot, A', in one side, an through this slot the barrelh is screwed into a screw-threaded opening in jacket H, and projectsthrough a slot into cylinder H', and in this barrel a spring, z', ishoused, that one end will bear against the trip-lever E and force itinto the path of a lifting-pin,j, that projects from one side to theother of cylinder H. The lifting-pin j has a recess, 91.on one side, inwhich the lever Efits loosely, and at this point presents a planesurface to the adjacent vertical face of lever E, and the face of saidlever is formed with a shoulder, 0, for engagement with the under sideof said pinj.

The cylinder H', which forms the valvehanger, has a stem, K, thatprojects down through a partition, M, in the stand A, where it isprovided with nuts N, between which and the partition M a spring, P, isinterposed for retracting thevalve hanger after it is lifted.

The governhr-arms R are pivoted to brackets S, that project from thesleeve C, and the rounded ends of their inner arms fit-loosely in slots1- in keeper b, so that as the balls fall the stern c will be lifted,and as they rise the stem a will be depressed. The sleeve is connectedwith the pulley-shaft T by suitable gearing, and the pulley T is beltedto the engine, as usual.

The operation of my device is as follows: When the parts are in theposition shown in Fig. 1, the engine has just completed a stroke and thevalve K is closed. Now, as the shaft Gis turned back by the eccentric,(not shown,) the arm fof sleeve F will lift upon link g, and as the armf and link g approach a vertical line they will by toggle action liftthe trip-arm E and cause it to lift upon piuj, and the cylinder H willbe raised to open the valve until the inclined face e of the trip-head Dwedges the trip far enough to one side to disengage notch o from pin j,when the cylinder H will be dropped, while arm f, passing thedeadcenter, will draw the trip-arm down in position for its notch toagain engage the pin j. This tripping will occur sooner or later in thestroke of the engine, according to the position 0f the governor-arms.When the balls are raised, the head D, being depressed,will act on thetrip-arm quickly, and vice versa.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-'- 1. The combination, in acut-off for steamengines, of atripping-head connected with the and itsengaging-pin, of thejacket, the rockt5 shaft and lift-ing trip-levertoggled to the rockshaft, and the spring for forcing the liftingtrip-lever into engagement with the pin of the valve-hanger, as setforth.

In testimony that I claim the foregoing I 2o have hereunto set my hand,at Milwaukee, in the county of Milwaukee and State of W'iseonsin, in thepresence of two witnesses.

BRUNO v. NORDBERG.

Vitnesses:

S. S'. STOUT, N. E. OLiPHANT.

